package com.xzh.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.xzh.common.constant.AuthServerConstant;
import com.xzh.common.exception.BizCodeEnume;
import com.xzh.common.utils.R;
import com.xzh.common.vo.MemberRespVo;
import com.xzh.gulimall.auth.feign.MemberFeignService;
import com.xzh.gulimall.auth.feign.ThirdPartFeignSeivice;
import com.xzh.gulimall.auth.vo.UserLoginVo;
import com.xzh.gulimall.auth.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;


import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {

    @Autowired
    ThirdPartFeignSeivice thirdPartFeignSeivice;
    @Autowired
    StringRedisTemplate redisTemplate;
    @Autowired
    MemberFeignService memberFeignService;

    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R sendcode(@RequestParam("phone") String phone)
    {
        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX+phone);
        if(!StringUtils.isEmpty(redisCode)){
            long l = Long.parseLong(redisCode.split("_")[1]);
            if(System.currentTimeMillis()-l < 60000){
                //60秒内不能再发
                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(),BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
            }
        }
        //接口防刷
        //验证码的再次校验。 redis 存key-phone ,value-code  sms:code:18169483190 -> 123456
        String code = UUID.randomUUID().toString().substring(0, 5);
        //redis缓存验证码，防止同一个手机号在60s再次发送验证码，

        thirdPartFeignSeivice.sendCode(phone,code);
        code=code+"_"+System.currentTimeMillis();
        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX+phone,code,5, TimeUnit.MINUTES);
        return R.ok();
    }

    /*
    RedirectAttributes模拟重定向携带数据
    * */
    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result, RedirectAttributes redirectAttributes){
        if(result.hasErrors()){
            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField,FieldError::getDefaultMessage));
            redirectAttributes.addFlashAttribute("errors",errors);
            //Request method 'POST' not supported
            //用户注册->/regist/-->转发/reg.html(路径映射默认get方式访问)
            //校验出错，转发到注册页
            return "redirect:http://auth.xzhmall.com/reg.html";
        }
        //真正注册，调用远程服务进行注册
        //1、校验验证码
        String code = vo.getCode();
        String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX+vo.getPhone());
        if(!StringUtils.isEmpty(s)){
            if(code.equals(s.split("_")[0])){
                //验证码通过
                //删除验证码,令牌机制
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX+vo.getPhone());
                R r = memberFeignService.regist(vo);
                if(r.getCode()==0){
                    //注册成功回到首页，回到登陆页面
                    return "redirect:http://auth.xzhmall.com/login.html";

                }else {
                    Map<String,String>errors = new HashMap<>();
                    errors.put("msg",r.getData("msg",new TypeReference<String>(){}));
                    redirectAttributes.addFlashAttribute("errors",errors);
                    return "redirect:http://auth.xzhmall.com/reg.html";
                }
            }
            else{
                Map<String,String> errors = new HashMap<>();
                errors.put("code","验证码错误");
                redirectAttributes.addFlashAttribute("errors",errors);
                return "redirect:http://auth.xzhmall.com/reg.html";
            }
        }else{
            Map<String,String> errors = new HashMap<>();
            errors.put("code","验证码已失效");
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.xzhmall.com/reg.html";
        }

    }
    @GetMapping("/login.html")
    public String loginPage(HttpSession session)
    {
        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
        if(attribute == null){
            //没登陆
            return "login";
        }
        else{
            return "redirect:http://xzhmall.com";
        }

    }

    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes, HttpSession session)
    {
        //远程登录
        R r = memberFeignService.login(vo);
        if(r.getCode()==0){
            //成功
            MemberRespVo data = r.getData("data", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);
            return "redirect:http://xzhmall.com";
        }else{
            Map<String,String> errors = new HashMap<>();
            errors.put("msg",r.getData("msg",new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.xzhmall.com/login.html";
        }


    }

}
